Scraper.



HNU. E-DZARDS. SGRAPER.

APPLIOATION FILED FEB. 15, 1908.

899,719; j Patented Sept. 29,1908; i

- 2 SHEETS8HEE'T 1.

attuned V H. U. EDZARDS.

SGRAPER.

APPLICATION IIL BD FEB. 15, 1908.

Patented Sept. 29, 1908.

2 SHEETS-SHEET 2.

z k M e 0 MM after/nag Wihmooe TED STATE-S PATENT onnro HARM openhouses, or PARIS, TEXAS.

SORAPER.

Be it known t at- I, HARM UDEN ED- ZARDS, a citizen of the UnitedStates, residing at Paris, in the county of Lamar and State of Texas,have invented certain new and useful Improvements in Scrapers, of whichthe following is a specification.

This invention is a scraper or grader suitable for road 01' field work,and adapted especially for ditching and grading.

The invention is characterized byvarious novelties of construction. asapplied to a grader having a mold-board and land-side which areadjustable to vary their angle with each other.

One novel feature of the device is an im roved socket-joint and hingebetween the and side and mold-board, and also between the mold-board andcross brace.

Another feature is a novel connection of draft chain, so -arranged thatin addition to the forward pull on the chain it exerts a downwardpressure on the mold board to hold the same down in the ground; and thedraft chain connections have the further advantage that they areadjustable so that they may be varied according to the angle of the mod-board, to avoid or correct the side draft.

Another feature of the invention is the means for raising or loweringthe scraper,

either for a brief period, as in dumping or in lifting the mold-boardover rocks or the like, or for a longer period, as in transporting thedevice. The implement also has a novel rudder device, to prevent sideslip or swing of the scraper.

The invention is illustrated in the accompanying drawings, in whichFigure 1 is a top )lan view of the imple ment. 'Fig. 2 is a sideelevation. Fig. 3 is a rear elevation. Fig. 4 is a detail in section onthe line 44 of Fig. 2, showing the, socket joint between the land-sideand the moldboard. Fig. 5 is a detail in elevation showing the swivelingwheel on which themoldboard-is mounted.

Referring specifically to the drawings, 6

indicates a land-side consistingof a board or piece of timber standingedgcwise, and conveniently' about ten foot long,ten inches high This isplvotally con'-.

and four. inches thick. nected at its front end to the mold-board .7,

which may be about six feet long, sixteen inches high and four inchesthick. The face "Specification of Letters gatent. Application filedFebruary 15, 1908. Serial no. 416,048.

Patented se aee, 190s.

cut into the land. The mold-board is con nected at its rear end to theland-side by an adjustable cross brace. 9, which for the dipiensionsgiven above will be about five feet on a 'l he front end of theland-side 6 is rounded; as indicated at 10, and is set in asocket orrecess 11 formed in.the front end of the mold board behind the pointthereof, the curvature being such that the front end of the land-sidewill be in contact with thef front wall of the recess at all ordinaryadjustments. This gives a directpressure or support for the moldboardagainst the front end of the landside, so that the hinge is to a largeextent relieved from the strain. Thehinge or pivotal connection isformed by means of top and bottom plates 12 which are substantiallytriangular in outline and which are attached to the mold-board by bolts13 and to the land-side by a pivot bolt 14 which extends through thefront end of the land-side,-said front end projecting into the spaceformed by said upper and lower plates. The curvature of the wall of therecess 1 l. is concentric with the bolt 14, and said bolt is preferablysomewhat loose in the land-side, so that the mold-board may backdirectly against the land-side and not against the pivot.

The 'pivot connection between the rear end of the mold-board and thebrace 9 is formed in a similar manner, the rounded end of the bracefitting in a curved socket 15 formed in the rear cnd'o'f the 1]10lLl-l)0fi.1-(l, and being held by a )ivot bolt 16 extending through upper andower angular plates 17 bolted to the mold-board. The thrust on 'themoldboard by the means indicated is thus supported by the ends of theland-side and cross )race.

The adjustable connection between the land-side and the brace t! iseffected by means of a chat 18 which is fastened to the inner side ofthe land-side and which has a series of holes ]S) to receive a bolt 20inserted through the corrcspomling holes in thcforked end of the brace9.. By shifting 'the brace the angle of the land-side and mold.boardwill be varied in an obvious manner, and accordingly the width of theditch or furrow will be varied.

The draft moans consist of a chain 21. One end of this is connected to abook 22 on the front-side of the brace 9, near the outer end thereof,and the chain extends thence over the rear end of the mold-board, uponwhich it rests or bears down when the draft 5 is a plied. The other endof the chain exten s through a horizontal slot 23 in the mold-board,near the front end thereof, and is hooked to one of a series of hooks 24fixed at intervals along the inner side of the landside or in one of aseries of holes in a clevishead 24 attached to inner side of thelandside. By changing the hitch of the chain to various hooks or holesthe angle of draft may be varied or adjusted in proper manner to preventside draft and to accord with the angle at which the mold-board is set.

For preventing side slip or swing the rear end of the land-side isprovided with a rudder which coin rises a blade 25 which is pivoted at26 to t e land side and which works under a strap 27 fixed thereto. Theblade may be raised or lowered by a lever 28 the blade. When the frontend of. the lever is turned down it bears as a cam upon the top edge ofthe blade and forces the blade below the ed e of the land-side and intothe ground, an by setting the lever in vertical position the blade isheld down in that osition. To raise the blade, the handle 0 the levermay be swung down and back, and its front edge will engage under a hook30 and so lift the blade out of the ground.

' For quickly raising or dumping the scraper the cross brace 9 isprovided with a bent lever 31 which is fulcruined on the brace as at 32and at its lower end has a caster wheel 33 which travels on the groundand which will swivel to adjust itself to the line of draft. The lowerarm of the lever is formed with a crank, as seen at 34, and when thelever is swung down the crank action causes uick lift of the rear end ofthe mold board an the adjacent parts. This is also useful in turning thescra er in small space. This lever, as Well as the rudder 28, can ifdesired be mani ulated from aseat 35 so ported on a suitab e bracket atthe rear end of the land-side.

To raise or lower the whole scraper with res ect to the ground, themold-board is provi ed with a caster wheel 36 which is carried by ascrew 37 extending through a threaded bracket 38 fastened to the rearside of the mold board. The screw is large enough to support aproportion of the weight of the niold board and is provided at the topwith a crank 39 whereby it may be turned to raise or lower the wheel.

When the mold-board is to be used in the ground the wheel is raised torelatively lower the board, but when the device is to be trans portedthe screw is turned down to lift the mold board from the ground. For thesame purpose the rear end of the land-side is provided with a wheel 40carried by a lever 41 fications within the scope of the followingland-side with a pivotal connection at their which is fulcrumed at 4-2on the inner side of the land-side and which may be swung to raise orlower the wheel, and which when adjusted can-be fixed in either positionby a bolt. in one of the holes 43 in the land-side.

By connecting the chain as shown a very effective draft is producedwhich does not interfere in any way with the operation of the moldboard. The rear end of the mold board, which'has a tendency to ride, isheld down by the pressure of the chain thereon, and the draft by meansof the socket joints above described is communicated directly to themold board. Various adjustments are permitted by the row of hooks 24,and by the holes in the clevis head 24, and of course the whiflie-treeconnections can be shifted along the chain as desired. The wheels allhave V-sha ed rims to avoid side slip and the concave ace of themold-board serves to turn the furrow sliceand carry the same down to therear end of the board. whlch is pivoted at 29 to the land-side, aboveThe invention is capable of various 1nodiclaims.

I claim:

, 1. A scraper having a land-side and a mold-board pivotally connectedtogether at their front ends, the mold-board having a curved recess inthe rear side thereof at the front end and the land-side having arounded front end which fits against the wall of said recess at thevarious angles.

2. A scraper having a mold-board and front ends, said connectioncomprising top and bottom plates fixed to the upper and lower edgesof'the 1nold-board, and a bolt connecting said dates and extendingthrough the front end 0 the landside.

A scraper comprising a mold-board, land-side and rear cross bracepivotally connected together, the mold-board abutting against the frontend of the land-side and the outer end of the crossbrace, and having110,

curved sockets receiving said ends.

4. A scraper having a landside, moldboard, and rear cross brace, and adraft chain connected at one end to the cross brace and extending overand bearing down upon the mold-board.

5. A scraper-having a land-side and a slotted mold-board, and a draftchain extending through said slot and connected at the end to theland-side.

6. A scraper having a land-side, moldboard and rear cross braceadjustably connected together, and a draft chain connected at one end tothe cross brace near the outer end thereof and below the upper edge ofthe 125 mold-board and extending thence over the mold-board, and bearingdown thereon and adjustably connected at the other end to the inner sideof the land-side H 7. A scraper having a land side and a rud- 13C derdevice at the rear end thereof, comprisin a vertically-swinging bladepivoted to the sife of the land-side and a cam lever fulcrumed on theland-side and arranged to bear 5 upon the blade. I

8. A scraper having a land-side, mold board and rear cross braceconnected together and a lifting lever fulcrumed on the cross brace andhaving a ground wheel at the 10 lower end.

9. A scraper having a'mold-board, and

means to raise orlower the same comprising a vertical screw mounted -inthreaded supports on the mold-board and having a caster Wheel at itslower end and a crank at the upper end.

In testimony whereof I aflix my signature, in presence of two witnessesHARM 'UDEN EDZARDS. Witnesses:

JNo. F. PETTIGREW, Gnu R. HANCOCK.

